Lint wants Cao Cao's holy spear inside her.
Mysterious song? Maybe it's the possessor of [Nereid Kyrie].
Kiba recovers the gender swap ray-gun and turns himself into Yumi just so he can have Issei's children one day.
@B214 What don't You get that about the Mil-tan having too much milky power for even a mutation piece?
And the group of mysterious devils is most likely referring to the devils that Hades created using Lilith's power.
Yeah let's just wait for nom@n.